fix: remove container bluez, use host BlueZ via D-Bus, set DBUS_SYSTEM_BUS_ADDRESS

fichero_printer/Dockerfile

@@ -1,17 +1,17 @@
 ARG BUILD_FROM
 FROM $BUILD_FROM
 
-# Python 3, BlueZ and pre-compiled Alpine packages (no C compiler needed)
+# Only dbus-dev needed to talk to the HOST BlueZ via D-Bus (host_dbus: true).
+# Do NOT install bluez here - we use the host BlueZ, not our own.
 RUN apk add --no-cache \
     bash \
     python3 \
     py3-pip \
     py3-numpy \
     py3-pillow \
-    bluez \
-    dbus
+    dbus-dev
 
-# Pure-Python packages only (no compilation required)
+# Pure-Python packages (bleak uses dbus-fast internally, no C compiler needed)
 RUN pip3 install --no-cache-dir --break-system-packages \
     "bleak>=0.21" \
     "fastapi>=0.111" \

fichero_printer/config.yaml

@@ -1,5 +1,5 @@
 name: "Fichero Printer"
-version: "0.1.1"
+version: "0.1.2"
 slug: "fichero_printer"
 description: "REST API for the Fichero D11s (AiYin) thermal label printer over Bluetooth"
 url: "https://git.leuschner.dev/Tobias/Fichero"

fichero_printer/run.sh

@@ -4,6 +4,9 @@ set -e
 
 CONFIG_PATH="/data/options.json"
 
+# Use the host BlueZ via D-Bus (requires host_dbus: true in config.yaml)
+export DBUS_SYSTEM_BUS_ADDRESS="unix:path=/run/dbus/system_bus_socket"
+
 # Read add-on options from the HA-provided JSON file using Python (already installed).
 PORT=$(python3 -c "import json; d=json.load(open('${CONFIG_PATH}')); print(d.get('port', 8765))")
 TRANSPORT=$(python3 -c "import json; d=json.load(open('${CONFIG_PATH}')); print(d.get('transport', 'ble'))")